Insulating vessel



FIG. 1 is a front side perspective view of an insulating vessel, showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof, the left side being a mirror image thereof; and

FIG. 5 is a top plan view.

The undisclosed bottom plan view of the insulating vessel is plane and unornamented. 

The ornamental design for an insulating vessel, as shown and described. 